20736364 has 12 divisors (see below), whose sum is σ = 39587688. Its totient is φ = 9425600.

The previous prime is 20736349. The next prime is 20736367. The reversal of 20736364 is 46363702.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (20736367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235597 + ... + 235684.

It is an arithmetic number, because the mean of its divisors is an integer number (3298974).

Almost surely, 2^20736364 is an apocalyptic number.

It is an amenable number.

20736364 is a deficient number, since it is larger than the sum of its proper divisors (18851324).

20736364 is a wasteful number, since it uses less digits than its factorization.

20736364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471296 (or 471294 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 20736364 is about 4553.7197981431. The cubic root of 20736364 is about 274.7330257496.

The spelling of 20736364 in words is "twenty million, seven hundred thirty-six thousand, three hundred sixty-four".